Malicious Code Vulnerability in zeal-utils Package

zeal-utils Updated 24 Sep 2026

Summary

22/09/2026
CRITICAL
No i
Critical
Not published

MAL-2026-16542: Malicious code in zeal-utils (npm). Affects zeal-utils versions 0.0.0. No fix is published. How to fix ↓

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Background

The zeal-utils package is a utility library in the npm ecosystem designed to provide various helper functions for developers. It is commonly used in JavaScript projects to streamline coding processes. However, this package has been identified to contain malicious code, posing significant risks to applications that depend on it.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the zeal-utils package, specifically in version 0.0.0. This code can potentially lead to unauthorized access, data breaches, or other harmful actions within applications that utilize this package. The malicious nature of the code was identified by ReversingLabs, highlighting the importance of scrutinizing third-party dependencies.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall zeal-utils

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

As a temporary workaround, you can avoid using the zeal-utils package altogether and look for alternative libraries that provide similar functionality without the associated risks.

Conclusion

The zeal-utils package has been identified to contain malicious code, posing a significant risk to applications that utilize it. It is essential to remove this package and monitor for any updates or patches. Utilizing tools like Vulert can help in identifying vulnerabilities in your project effectively.

See every vulnerability recorded for zeal-utils →

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FAQ

zeal-utils is a utility library in the npm ecosystem that offers various helper functions for JavaScript developers.

You can use Vulert, a tool that monitors and alerts for open-source vulnerabilities in real-time. By analyzing your package-lock.json file, Vulert can help you determine if your application is at risk.

If immediate removal is not feasible, consider using alternative libraries that provide similar functionalities without the associated risks until you can safely remove zeal-utils.

Currently, there is no patched version available for the zeal-utils package. It is recommended to uninstall the package until a secure version is released.

Vulert uses your package-lock.json file to monitor and alert you in real-time about open-source vulnerabilities in your software, ensuring you stay informed about potential risks.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall zeal-utils

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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